...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ocean Engineering >Experimental investigations on developments of velocity field near above a sandy bed during regular wave-induced fluidized responses
【24h】

Experimental investigations on developments of velocity field near above a sandy bed during regular wave-induced fluidized responses

机译：规则波诱导流化响应过程中沙床上方速度场发展的实验研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Regular waves were applied in a laboratory flume to investigate the evolutions of the velocity fields near above a fine sandy bed (d_(50)=0.073 mm) during fluidized responses. Measurements of 2D velocity components and suspended sediment concentration (SSC) at 1 cm above the bed in addition to water surface displacements and sub-soil pore pressures were carried out with an acoustic Doppler velocimeter and an optical probe. The results have shown similar three typical soil responses including one unfluidized and two fluidized responses to previous report in other fine-grained soil beds. In the post- and pre-fluidized stages of a resonantly fluidized response, amplitudes of horizontal velocity component can be decreased by a maxima value of 50% while vertical components can be amplified up to 5 times larger. The developments of near-bed velocity field become less significant in consecutive non-resonantly fluidized responses. Particularly, the evolutions of the velocity field are closely dependent on the deepening of fluidized surface soil layers d/and the characteristics of soil fluidization responses. The amplified vertical velocity components are clearly contradictory to the dissipated overloading waves near above a fluidized bed but are critical to much drastic sediment suspensions by interactions between overloading waves and fluidized bed soils.
机译：在实验室水槽中施加规则波，以研究流化响应过程中细沙床（d_（50）= 0.073 mm）上方附近速度场的演变。除水表面位移和地下土壤孔隙压力外，还使用声学多普勒测速仪和光学探头对床上方1 cm处的二维速度分量和悬浮沉积物浓度（SSC）进行了测量。结果表明，与之前在其他细粒土壤床层中的报道相比，三种典型的土壤响应包括未流化和两种流化响应。在共振流化响应的后流化阶段和预流化阶段，水平速度分量的振幅可以减小50％的最大值，而垂直分量的振幅可以放大多达5倍。在连续的非共振流化响应中，近床速度场的发展变得不那么重要。特别是，速度场的演化密切依赖于流化表面土壤层的深化d /和土壤流化响应的特性。放大的垂直速度分量显然与流化床上方附近的消散的超载波矛盾，但对于超载波与流化床土壤之间相互作用的剧烈沉积物悬浮至关重要。

著录项

  • 来源
    《Ocean Engineering》 |2011年第7期|p.868-877|共10页
  • 作者

    Shiaw-Yih Tzang; Yung-Lung Chen; Shan-Hwei Ou;

  • 作者单位

    Department of Harbor and River Engineering, National Taiwan Ocean University, 2, Pei-Ning Road, Keelung 202, Taiwan, ROC;

    Department of Harbor and River Engineering, National Taiwan Ocean University, 2, Pei-Ning Road, Keelung 202, Taiwan, ROC;

    Department of Environmental Resources Management, Tajen University, 20, Weisin Road, Yanpu Township, Pingtung 907, Taiwan, ROC;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    velocity field; sandy bed; fluidized response; sediment suspension;

    机译：速度场沙床流体响应泥沙悬浮;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号